饲粮蛋白质水平对重庆黑山羊消化代谢的影响  

Effects of Dietary Protein Levels on Digestion and Metabolism for Chongqing Black Goat

作　　者：赵智华[1] 左福元[1] 周勤飞[1] 

机构地区：[1]西南大学荣昌校区,重庆荣昌402460

出　　处：《中国畜牧杂志》2009年第3期23-27,共5页Chinese Journal of Animal Science

基　　金：重庆市重大科技专项--草食畜牧良种繁育与健康养殖(CSTC;2008AA1020)

摘　　要：以5月龄左右重庆黑山羊为试验动物,配制了粗蛋白质水平分别为8.23%、10.42%和12.52%的饲粮,进行了消化代谢试验和瘤胃降解试验。结果表明:随着饲粮中粗蛋白质水平的提高,各组间的干物质消化率、粗蛋白质消化率、氮沉积率、中性洗涤纤维消化率、酸性洗涤纤维消化率、粗纤维消化率之间的差异均不显著(P>0.05)。随着饲粮中粗蛋白质水平的提高,瘤胃内中性洗涤纤维的降解率在各个时间点变化不明显(P>0.05);酸性洗涤纤维的降解率在6h及以前降低(P<0.05),之后接近;干物质的降解率在6h及以前提高(P<0.05),之后接近;有机物的降解率在6h提高(P<0.05),之后接近;粗蛋白质降解率在12h及以前提高(P<0.05),之后接近。In the study, diets of different crude protein levels （8.23%, 10.42% and 12.52%） were compounded. The digestion and metabolism experiments and the rumen degradation test were carried on for 5 months Chongqing black goat. The results showed that① With the increase of crude protein level, there was no significant difference among of the digestibility rate of the dry matter, crude protein, nitrogen, NDF, ADF and CF （P 〉 0.05）. ②With the increase of crude protein level,the rumen degradation rate of NDF wasn＇t obviously changed in each time spot （P 〉 0.05）;there was a decrease in rumen degradation rate of ADF within 6 hours （P 〈 0.05）, and afterwards they became closer; the rumen degradation rate of dry matter was increased within 6 hours （P 〈 0.05）, and afterwards they became closer; there was a increase in rumen degradation rate of organic matter at 6th hour（P 〈 0.05）, and afterwards they became closer; the rumen degradation rate of crude protein was increased within 12 hours （P 〈 0.05）, and afterwards they became closer

关 键 词：蛋白质水平 消化代谢 重庆黑山羊 

分 类 号：S826.5[农业科学—畜牧学]